Twisting mechanism.



Patentad Da c. 24, |90I.

G. VL. BROWNELL. TWISTING MEGHANISIL (Application lad Jan. 24, 1898.)

(No Modal.)

WITQESSES:

ATTURHEY.

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`NITED STATES PATENT OFFICE.

. 'eEoRGE L. BEowNELL, or WORCESTER, MASSACHUSETTS.

TWISTING IVIECHANISIVI- SPECIFICATION forming part of Letters Patent No.689,786, dated December v24, 1901. Application filed January 24, 1898.Serial No. 667,693. (No model.) l

To au wtom it may concern:

Be it known that I, GEORGEL. BRowNELL,

a citizenof the UnitedStates, and a residentV of Worcester, in thecounty of Worcester and State ofMassachusetts, have invented a new andusefullmprovement in Twisting Mechanism, of which the following is aspecification, accompanied by drawings forming a part of the same, inwhich- Figure l represents a side elevation of a twisting mechanismembodying my invention. Fig; 2 is a sectional view of a portion of thesame shown on line 2 2, Fig. 1 and Fig. 3 is a sectional view of thatportion of the mechanism shown in Fig. 2 with the section taken on line3 l3, Fig. 2.

Similar letters refer to similar parts in the dilferent figures.

My invention relates to a mechanism for twisting twine or cord; and ithas for its objects to provide an improved traversing mechanism by whichthe twine or cord is laid evenly upon the winding-spool,and also toprovide means whereby the individual strands are moved along upon theedge of a water'- cup; and it consists inthe construction andarrangement of 'parts as hereinafter described, and set forth in theannexed claim.

Referring to the drawings, A denotes a portion of the framework of atwisting-machine, which is shown in sectional View in order to disclosethe operative parts of the machine, which are of a well-known form ofconstruction, comprising a rotating Hier-frame B, consisting of a diskC, upright nier-arms D D', connected at the top by a cross-bar D2 andcarried by a revolving spindle D3.

E denotes the windin'gspo'ol upon which the twisted cord is wound andheld conceutrically within the flier-arm.

Attached to the framework of the machine is an upright bar F, forming away for a vertically-sliding rack G, provided with teeth G', which areengaged by a pinion H, attached to a shaft H', which is rotated a singlerevolution in opposite directions by means of a mangle-wheel H2 and theusual connecting mechanism, causing a. reciprocating motion to be givento the sliding rack G on the bar F. The rack G is provided with abracket I, to which is attached a ring J, held concen trically with therotating flier-frame B. The

ring J is provided'at its lower edge with an interior liange J' andatits upper edge with a removable liange J 2, the two iianges J and J2.inclosing a groove J3 upon the inner side of'the'ring. The uprightHier-arms D and D' carry sleeves K K', preferably formed of aluminium inorder to reduce theirweight to a minimum and lined or bushed withsheetsK2 of vulcanized fiber to reduce the friction upon the flier-arms.l Uponthe side of the sleeves K K' next the ring J is a screwthreaded stud K5,preferably integral with thev sleeve, upon which is screwed arectangular block of vulcanizedflber K4, adapted to slide in the grooveJ3 of the Yring J, and,

upon one of the adjacent sides of the sleeves are lugs K5, having eyesK,through one of which the twisted cord L, Fig. l, is conducted to thewinding-spool. As the ilier-arms D D' are rotated the sleeves K K' arecarried around the winding-spool, and the cord, passing through the eyeK6 of one of the sleeves K K', becomes wound thereon and is evenlytraversed or laid upon the winding-spool -by the rising-and-fallingmotion of the ring J, which slides the sleeves K K" up and down upon theflier-arms D D. The sleeves K K are duplicates and are carried upon eachof the flier-arms D D' in order to balance the nier-frame, and the lugsK5 are traversed the distance between the heads of the windingspool bythe rising-and-falling motion of the ring J, actuated by themangle-wheelH2 andv connected operating mechanism.

In. the'traversing mechanism above described the rotating parts drivenby the flierarms D D consist only of the light aluminium sleeves withtheir bushing of vulcanized ber, so that but little momentum is added tothe nier-arms, and the contact between 'the stationary ring andrevolving parts of the mechanism is limited to the contact of theflanges J' J2 with the upper and lower sides of the small rectangularblock K4 of vulcanized fiber, thereby decreasing the friction betweenthe moving and stationary parts.

The ilierar1ns D and D are preferably rectangular in cross-section andare grooved on opposite sides, as at D4, in order to reduce the weightof the arms. The sleeves K K' are preferably longer than the width ofthe ring J to provide a bearing upon the iiiera IOO arms long enough toprevent the binding of the sleeves on the arms as the sleeves are movedup and down upon the arms by the rising-and-falling motion of the ringJ, and the block K4 is also preferably rectangular to furnish abearing-surface against the ilanges J and J2 and prevent the block fromunscrewing upon the screw-threaded studs K3. The upper flange J of thering J is removable in order to permit the blocks K4 to become releasedfrom the groove J 3 and allow the blocks K4 to be replaced when worn.

I am aware that a traverse mechanism comprising a rotating ring carryingcordguides and driven by the Hier-arms in a guideway having` arising-and-falling motion is not new, and I do not herein claim such.

My improved traverse mechanism enables me to attain a very high speed ofthe flierarms with a slight friction of the moving parts and with a veryslight increase in momentum. By increasing the length of the sleevesupon the dier-arms I counteract the drag or twisting effect of the cordor twine upon the guides and transfer any increase in pressure from thering J and blocks K4 to the sleeves and the flier-arms or fromrapidlymoving surfaces to slowly-moving surfaces, and thereby prevent anundue increase in friction.

In machines of this class it is frequently necessary to revolve theHier-frame at a very high speed, and it is desirable to reduce both thefriction and the momentum of the movine` parts, and I therefore carrythe cordguides upon sleeves which are carried by the Hier-arms which areparallel with their axes of rotation and serve as guideways for thesleeves, thereby securing along bearing upon the flier-arms to resistthe twisting strain of the cord upon the guides and reduce the weight ofthe moving part-s to a minimum and also decrease the bearing-surfaceswhich are in rapid motion.

The twisted cord L is composed of individual strands taken from thespools 1, 2, and 3, two of these strands being shown at a a.

The individual strands are carried over the upper edge of a cup M,filled with water, and each strand is depressed beneath the surface ofthe water held in the cup M by being carried beneath the foot N, inorder to wet the strands as they pass to the twisting and windingmechanism. Each of the strand# spools 1, 2, and 3 is supported upon arotating table O, provided with a hub O, to which is attached aworm-gear P, engaged by an actuating-worm I on a rotating shaft P2 inorder to cause the strands as they are con# ducted from the strand-spools 1, 2, and `3 to be moved along the edge of the stationarywater-cup M and prevent grooves from being worn in the edge of the cup.

What I claim as my invention, and desire to secure by Letters Patent, is

In a twisting mechanism, the combination of a Hier-arm parallel with itsaxis of rota# tion and polygonal in cross-section, means for rotatingsaid flier-arm, a sleeve capable of longitudinal movement thereon andfitting said flier-arm, whereby it is held from rotation relatively tosaid arm, a cord-guide projecting from one side of said sleeve, a blockattached to the outer side of said sleeve, a ring provided with a groovereceiving said block and means for imparting a traversing movement tosaid ring parallel with the axis of rotation of said flier-arm,substantially as described.

Dated this 17th day of January, 1898.

GEORGE L. BROXVNELL.

Witnesses:

RUB-Us B. FowLER, HENRY W. FowLER.

